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// Copyright 2018-2020, Wayfair GmbH
//
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use simd_json::prelude::ValueType;
use std::fmt;
use std::io;

/// Influx parser error
#[derive(Debug)]
pub enum EncoderError {
    InvalidField(&'static str),
    InvalidTimestamp(ValueType),
    InvalidValue(String, ValueType),
    Io(io::Error),
    MissingField(&'static str),
}

impl PartialEq for EncoderError {
    fn eq(&self, other: &Self) -> bool {
        match (self, other) {
            (EncoderError::InvalidField(v1), EncoderError::InvalidField(v2))
            | (EncoderError::MissingField(v1), EncoderError::MissingField(v2)) => v1 == v2,
            (EncoderError::InvalidTimestamp(v1), EncoderError::InvalidTimestamp(v2)) => v1 == v2,
            (EncoderError::InvalidValue(k1, v1), EncoderError::InvalidValue(k2, v2)) => {
                k1 == k2 && v1 == v2
            }
            (EncoderError::Io(_), EncoderError::Io(_)) => true,

            (_, _) => false,
        }
    }
}

/// Influx parser error
#[derive(Debug, PartialEq)]
pub enum DecoderError {
    EqInTagValue(usize),
    Unexpected(usize),
    Generic(usize, String),
    InvalidFields(usize),
    MissingTagValue(usize),
    ParseFloatError(usize, lexical::Error),
    ParseIntError(usize, lexical::Error),
    TrailingCharacter(usize),
    InvalidEscape(usize),
    UnexpectedEnd(usize),
}

impl fmt::Display for EncoderError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}

impl fmt::Display for DecoderError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}

impl std::error::Error for EncoderError {}
impl std::error::Error for DecoderError {}

/// Parser result type
pub type EncoderResult<T> = std::result::Result<T, EncoderError>;

/// Parser result type
pub type DecoderResult<T> = std::result::Result<T, DecoderError>;

impl From<io::Error> for EncoderError {
    fn from(e: io::Error) -> Self {
        Self::Io(e)
    }
}

/*
    Err(ErrorKind::InvalidInfluxData(format!(
        "Expected '{}', '{:?}' or '{:?}' but did not find it",
        end1, end2, end3
    ))

    return Err(ErrorKind::InvalidInfluxData("non terminated escape sequence".into(),).into());
    return Err(ErrorKind::InvalidInfluxData("= found in tag value".into()).into());
    return Err(ErrorKind::InvalidInfluxData("Tag without value".into()).into());
    return Err(ErrorKind::InvalidInfluxData("Failed to parse fields.".into()).into()),

*/